Known to most collectors simply as "McKeown's," the most recent 12th edition is 1248 pages long and claims over 10,000 cameras are illustrated. Descriptions of camera models can include features, dates, accessories, and historical significance, making the description "price guide" somewhat too modest. The paper-bound version weighs about 6.5 lbs. or 2.9 kg.

The name McKeown is related to the name "McEwen" and the pronunciations are similar.

Clothbound edition ISBN 0-931838-40-1, paperback ISBN 0-931838-41-X

As of July, 2015, a new edition was said to be nearing completion, but with the deliverable medium not yet decided[1].